Skip to main content

Full text of "The Morphology And Evolution Of The Apes And Man"

See other formats

Kidneys,—The kidneys have the same form and relative positions as in Man, but the right one may be very mobile. There is a variable quantity of perirenal fat, but I did not observe any supporting fascial shelf in the Chimpanzee and Gibbon. The capsule strips easily and is well vascularized. The cortex is thick, and the papillse tend to fuse in the Apes. The numbers of papillae vary, being one to four in the Gibbon, one in the Orang, one to four in the Gorilla, and one to six in the Chimpanzee, according to various authors. The calyces are small, and the pelvis may contain fat. The structures in the hilum of the kidney are arranged as in Man. The ureter runs as in Man, but I was unable to detect lymphatics accompanying it in the Chimpanzee.
Bladder.—In the Chimpanzee it is thick and muscular, but no urachus nor anterior ligaments are present/ Lateral ligaments are well marked; and the thick round ligaments of the uterus are connected to them by peritoneal folds, so the utero-vesical pouch is crescentic. The mucosa is thick and corrugated, and the ureteric papillae lie at the ends of prominent ridges. The patu-lous urethral orifice is close to the ridge, so the trigone is small. The vesical musculature consists of two layers. There is an external longitudinal layer, half an inch wide,